[1] CHOI N S, CHEN Z, FREUNBERGER S A. Challenges facing lithium batteries and electrical double-layer capacitors[J]. Angew. Chem. Int. Ed, 51, 9994-10024(2012).

[2] LIU W, OH P, LIU X. Nickel-rich layered lithium transition- metal oxide for high energy lithium-ion batteries[J]. Angew. Chem. Int. Ed, 54, 4440-4457(2015).

[3] SCROSATI B, GARCHE J. Lithium batteries: status, prospects and future[J]. J. Power Sources, 195, 2419-2430(2010).

[5] LEE K S, MYUNG S T, AMINE K. Structural and electrochemical properties of layered Li[Ni_1-2xCo_xMn_x]O₂ ( x=0.1-0.3) positive electrode materials for Li-ion batteries[J]. J. Electrochem. Soc, 154, A971-A977(2007).

[6] JOUANNEAU S, MACNEIL D D, LU Z. Morphology and safety of Li[Ni_xCo_1-2xMn_x ]O₂ (0≤x≤1/2)[J]. J. Electrochem. Soc, 150, A1299-1304(2003).

[7] MACNEIL D D, LU Z H, CHEN Z H. A comparison of the electrode/electrolyte reaction at elevated temperatures for various Li-ion battery cathodes[J]. J. Power Sources, 108, 8-14(2002).

[8] KIM J, LEE H, CHA H. Nickel-rich cathodes: prospect and reality of Ni-rich cathode for commercialization[J]. Adv. Energy Mater, 8, 1702028(2018).

[9] XIONG X H, WANG Z X, YUE P. Washing effects on electrochemical performance and storage characteristics of LiNi_0.8Co_0.1Mn_0.1O₂ as cathode material for lithium-ion batteries[J]. J. Power Sources, 222, 318-325(2013).

[10] XU S, WANG X, ZHANG W. The effects of washing on LiNi_0.83Co_0.13Mn_0.04O₂ cathode materials[J]. J. Solid State Ionics, 334, 105-110(2019).

[11] LI J, CHEN B R, ZHOU H M. Effects of washing and heat-treatment on structure and electrochemical charge/discharge property of LiNi_0.8Co_0.15Al_0.05O₂ powder[J]. J. Inorg. Mater, 31, 773-778(2016).

[12] XU S Z, LUO G F, JACOBS R. Ab initio modeling of electrolyte molecule ethylene carbonate decomposition reaction on Li(Ni, Mn, Co)O₂ cathode surface[J]. ACS Appl. Mater. Interfaces, 9, 20545-20553(2017).

[13] MYUNG S T, IZUMI K, KOMABA S. Role of alumina coating on Li-Ni-Co-Mn-O particles as positive electrode material for lithium-ion batteries[J]. Chem. Mater, 17, 3695-3704(2005).

[14] YU H J, QIAN Y M, OTANI M. Study of the lithium/nickel ions exchange in the layered LiNi_0.42Mn_0.42Co_0.16O₂ cathode material for lithium ion batteries: experimental and first-principles calculations[J]. Energy Environ. Sci, 7, 1068-1078(2014).

[15] AURBACH D. Electrode-solution interactions in Li-ion batteries: a short summary and new insights[J]. J. Power Sources, 497-503(2003).

[16] MYUNG S T, AMINE K, SUN Y K. Surface modification of cathode materials from nano- to microscale for rechargeable lithium- ion batteries[J]. J. Mater. Chem, 20, 7074-7095(2010).

[17] YOON W S, HANSON J, MCBREEN J. A study on the newly observed intermediate structures during the thermal decomposition of nickel-based layered cathode materials using time-resolved XRD[J]. Electrochem.Commun, 8, 859-862(2006).

[18] KONISHI H, YUASA T, YOSHIKAWA M. Thermal stability of Li_1-yNi_xMn_(1-x)/2Co_(1-x)/2O₂ layer-structured cathode materials used in Li-ion batteries[J]. J. Power Sources, 196, 6884-6888(2011).

[19] BAK S M, HU E Y, ZHOU Y N. Structural changes and thermal stability of charged LiNi_xMn_yCo_zO₂ cathode materials studied by combined in situ time-resolved XRD and mass spectroscopy[J]. ACS Appl. Mater. Interfaces, 6, 22594-22601(2014).

[20] JUNG S K, GWON H, HONG J. Understanding the degradation mechanisms of LiNi_0.5Co_0.2Mn_0.3O₂ cathode material in lithium ion batteries[J]. Adv. Energy Mater, 4, 1300787(2014).

[22] MANTHIRAM A, KNIGHT J C, MYUNG S T. Nickel-rich and lithium-rich layered oxide cathodes: progress and perspectives[J]. Adv. Energy Mater, 6, 1501010(2016).

[23] CHEN Z, CHAO D, LIN J. Recent progress in surface coating of layered LiNi_xCoyMnzO₂ for lithium-ion batteries[J]. Mater. Res. Bull, 96, 491-502(2017).

[24] AURBACH D. The electrochemical behavior of lithium salt solutions of γ-butyrolactone with noble metal electrodes[J]. J. Electrochem. Soc, 136, 906-913(1989).

[25] EDSTROM K, GUSTAFSSON T, THOMAS J. The cathode- electrolyte interface in the Li-ion battery[J]. Electrochim. Acta, 50, 397-403(2004).

[26] AURBACH D. γ-butyrolactone solutions II. contaminated solutions[J]. J. Electrochem. Soc, 136, 1611-1614(1989).

[27] LIN F, MARKUS I M, NORDLUND D. Surface reconstruction and chemical evolution of stoichiometric layered cathode materials for lithium-ion batteries[J]. Nat. Commun, 5, 3529(2014).

[28] LI J, LIU H, XIA J. The impact of electrolyte additives and upper cut-off voltage on the formation of a rocksalt surface layer in LiNi_0.8Mn_0.1Co_0.1O₂ electrodes[J]. J. Electrochem. Soc, 164, A655-A665(2017).

[29] SHI Y, ZHANG M H, QIAN D N. Ultrathin Al₂O₃ coatings for improved cycling performance and thermal stability of LiNi_0.5Co_0.2Mn_0.3O₂ cathode material[J]. Electrochim. Acta, 203, 154-161(2016).

[30] NEUDECK S, STRAUSS F, GARCIA G. Room temperature, liquid-phase Al₂O₃ surface coating approach for Ni-rich layered oxide cathode material[J]. Chem. Commun, 55, 2174-2177(2019).

[31] VETTER J, NOVAK P, WAGNER M R. Ageing mechanisms in lithium-ion batteries[J]. J. Power Sources, 147, 269-281(2005).

[32] AURBACH D, MARKOVSKY B, SALITRA G. Review on electrode-electrolyte solution interactions, related to cathode materials for Li-ion batteries[J]. J. Power Sources, 165, 491-499(2007).

[33] LIANG L W, HU G R, JIANG F. Electrochemical behaviours of SiO₂-coated LiNi_0.8Co_0.1Mn_0.1O₂ cathode materials by a novel modification method[J]. J. Alloys Compd, 657, 570-581(2016).

[34] GAN Z G, HU G R, PENG Z D. Surface modification of LiNi_0.8Co_0.1Mn_0.1O₂ by WO₃ as a cathode material for LIB[J]. Appl. Surf. Sci, 481, 1228-1238(2019).

[35] LI Y P, YAN G J, LUO L M. Enhanced electrochemical performance of LiNi_0.4Co_0.2Mn_0.4O₂ cathode materials via Y₂O₃ coating[J]. Mater. Res. Express, 6, 105533(2019).

[36] LOGHAVI M M, MOHAMMADI-MANESH H, EQRA R. LiNi_0.8Co_0.15Al_0.05O₂ coated by chromium oxide as a cathode material for lithium-ion batteries[J]. J Solid State Electrochem, 23, 2569-2578(2019).

[37] MYUNG S T, IZUMI K, KOMABA S. Functionality of oxide coating for Li[Li_0.05Ni_0.4Co_0.15Mn_0.4]O₂ as positive electrode materials for lithium-ion secondary batteries[J]. J. Phys. Chem. C, 111, 4061-4067(2007).

[38] ZUO D X, WANG C P, TIAN G L. Comparative study of Al₂O₃, SiO₂ and TiO₂-coated LiNi_0.6Co_0.2Mn_0.2O₂ electrode prepared by hydrolysis coating technology[J]. J. Electrochem. Sci. Eng, 9, 85-97(2019).

[39] ZHU W C, HUANG X, LIU T T. Ultrathin Al₂O₃ coating on LiNi_0.8Co_0.1Mn_0.1O₂ cathode material for enhanced cycleability at extended voltage ranges[J]. Coatings, 9, 92(2019).

[40] NEUDECK S, MAZILKIN A, REITZ C. Effect of low-temperature Al₂O₃ ALD coating on Ni-rich layered oxide composite cathode on the long-term cycling performance of lithium- ion batteries[J]. Sci. Rep, 9, 5328(2019).

[41] CUI X L, AI L, MAO L P. Enhanced electrochemical properties of LiNi_0.6Co_0.2Mn_0.2O₂ cathode material by the diffusional Al₂O₃ coating layer[J]. Ionics, 25, 411-419(2019).

[42] YANG K, FAN L Z, GUO J. Significant improvement of electrochemical properties of AlF₃-coated LiNi_0.5Co_0.2Mn_0.3O₂ cathode materials[J]. Electrochim. Acta, 63, 363-368(2012).

[43] LEE S H, YOON C S, AMINE K. Improvement of long-term cycling performance of Li[Ni_0.8Co_0.15Al_0.05]O₂ by AlF₃ coating[J]. J. Power Sources, 234, 201-207(2013).

[44] CHO Y, OH P, CHO J. A new type of protective surface layer for high-capacity Ni-based cathode materials: nanoscaled surface pillaring layer[J]. Nano Lett, 13, 1145-1152(2013).

[45] HAN B L, LU X C. Effect of nano-sized CeF₃ on microstructure, mechanical, high temperature friction and corrosion behavior of Ni-W composite coatings[J]. Surf. Coat. Technol, 203, 3656-3660(2009).

[46] KUMAR D A, SELVASEKARAPANDIAN S, NITHYA H. Structural and conductivity analysis on cerium fluoride nanoparticles prepared by sonication assisted method[J]. Solid State Sci, 14, 626-634(2012).

[47] KUMAR D A, SELVASEKARAPANDIAN S, NITHYA H. Influence of substrate temperature on CeF₃ thin films prepared by thermal evaporation[J]. Mater. Chem. Phys, 143, 765-772(2014).

[48] XIE Y, GAO D, ZHANG L L. CeF₃-modified LiNi_1/3Co_1/3Mn_1/3O₂ cathode material for high-voltage Li-ion batteries[J]. Ceram. Int, 42, 14587-14594(2016).

[49] SONG H G, KIM S B, PARK Y J. Enhanced electrochemical properties of Li[Ni_0.5Co_0.2Mn_0.3]O₂ cathode by surface coating using LaF₃ and MgF₂[J]. J. Electroceram, 29, 163-169(2012).

[50] DAI S C, YAN G J, WANG L. Enhanced electrochemical performance and thermal properties of Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂ cathode material via CaF₂ coating[J]. J. Electroanal. Chem, 847, 113197(2019).

[51] LIM Y J, LEE S M, LIM H. Amorphous Li-Zr-O layer coating on the surface of high-Ni cathode materials for lithium ion batteries[J]. Electrochim. Acta, 282, 311-316(2018).

[52] LIU S J, WU H, HUANG L. Synthesis of Li₂Si₂O₅-coated LiNi_0.6Co_0.2Mn_0.2O₂ cathode materials with enhanced high-voltage electrochemical properties for lithium-ion batteries[J]. J. Alloys Compd, 674, 447-454(2016).

[53] JO C H, CHO D H, NOH H J. An effective method to reduce residual lithium compounds on Ni-rich Li[Ni_0.6Co_0.2Mn_0.2]O₂ active material using a phosphoric acid derived Li₃PO₄ nanolayer[J]. Nano Res, 8, 1464-1479(2015).

[54] ZHU J, LI Y J, XUE L L. Enhanced electrochemical performance of Li₃PO₄ modified Li[Ni_0.8Co_0.1Mn_0.1]O₂ cathode material via lithium-reactive coating[J]. J. Alloys Compd, 773, 112-120(2019).

[55] FAN Q L, YANG S D, LIU J. Mixed-conducting interlayer boosting the electrochemical performance of Ni-rich layered oxide cathode materials for lithium ion batteries[J]. J. Power Sources, 421, 91-99(2019).

[56] BAN L Q, YIN Y P, ZHUANG W D. Electrochemical performance improvement of Li_1.2[Mn_0.54Ni_0.13Co_0.13]O₂ cathode material by sulfur incorporation[J]. Electrochim. Acta, 180, 218-226(2015).

[57] HUANG Y Q, HUANG Y H, HU X L. Enhanced electrochemical performance of LiNi_0.8Co_0.15Al_0.05O₂ by nanoscale surface modification with Co₃O₄[J]. Electrochim. Acta, 231, 294-299(2017).

[58] XU S, DU C Y, XU X. A mild surface washing method using protonated polyaniline for Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂ material of lithium ion batteries[J]. Electrochim. Acta, 248, 534-540(2017).

[59] HE X S, HAN G K, LOU S F. Improved electrochemical performance of LiNi_0.8Co_0.15Al_0.05O₂ cathode material by coating of graphene nanodots[J]. J. Electrochem. Soc, 166, A1038-A1044(2019).

[60] YANG H, WU K P, HU G R. Design and synthesis of double- functional polymer composite layer coating to enhance the electrochemical performance of the Ni-rich cathode at the upper cutoff voltage[J]. ACS Appl. Mater. Interfaces, 11, 8556-8566(2019).

[61] GAN Q M, QIN N, ZHU Y H. Polyvinylpyrrolidone-induced uniform surface-conductive polymer coating endows Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂ with enhanced cyclability for lithium-ion batteries[J]. ACS Appl. Mater. Interfaces, 11, 12594-12604(2019).

[65] ZHANG S S, CHEN J, WANG C S. Elemental sulfur as a cathode additive for enhanced rate capability of layered lithium transition metal oxides[J]. J. Electrochem. Soc, 166, A487-A492(2019).

[66] ZHANG S S, FAN X L, WANG C S. Enhanced electrochemical performance of Ni-rich layered cathode materials by using LiPF₆ as a cathode additive[J]. ChemElectroChem, 6, 1536-1541(2019).

[67] LI J, DOWNIE L E, MA L. Study of the failure mechanisms of LiNi_0.8Mn_0.1Co_0.1O₂ cathode material for lithium ion batteries[J]. J. Electrochem. Soc, 162, A1401-A1408(2015).

[68] LIU H, WOLF M, KARKI K. Intergranular cracking as a major cause of long-term capacity fading of layered cathodes[J]. Nano Lett, 17, 3452-3457(2017).

[69] ZHAO E Y, CHEN M M, HU Z B. Improved cycle stability of high-capacity Ni-rich LiNi_0.8Mn_0.1Co_0.1O₂ at high cut-off voltage by Li₂SiO₃ coating[J]. J. Power Sources, 343, 345-353(2017).

[70] PENG Z J, YANG G W, LI F Q. Improving the cathode properties of Ni-rich LiNi_0.6Co_0.2Mn_0.2O₂ at high voltages under 5C by Li₂SiO₃ coating and Si⁴⁺ doping[J]. J. Alloys Compd, 762, 827-834(2018).

[71] LEE S W, KIM M S, JEONG J H. Li₃PO₄ surface coating on Ni-rich LiNi_0.6Co_0.2Mn_0.2O₂ by a citric acid assisted Sol-Gel method: improved thermal stability and high-voltage performance[J]. J. Power Sources, 360, 206-214(2017).

[72] KIM S B, LEE K J, CHOI W J. Preparation and cycle performance at high temperature for Li[Ni_0.5Co_0.2Mn_0.3]O₂ coated with LiFePO₄[J]. J. Solid State Electrochem, 14, 919-922(2010).

[73] WU Z Z, JI S P, LIU T C. Aligned Li⁺ tunnels in core-shell Li(Ni_xMn_yCo_z)O₂@LiFePO₄ enhances its high voltage cycling stability as Li-ion battery cathode[J]. Nano Lett, 16, 6357-6363(2016).

[74] ZHU L, YAN T F, JIA D. LiFePO₄-coated LiNi_0.5Co_0.2Mn_0.3O₂ cathode materials with improved high voltage electrochemical performance and enhanced safety for lithium ion pouch cells[J]. J. Electrochem. Soc, 166, A5437-A5444(2019).

[75] KIM W S, KIM S B, JANG I C. Remarkable improvement in cell safety for Li[Ni_0.5Co_0.2Mn_0.3]O₂ coated with LiFePO₄[J]. J. Alloys Compd, 492, L87-L90(2010).

[76] DIAO R J, NAYAKA G P, ZHU C Y. CePO₄ coated LiNi_0.6Co_0.2Mn_0.2O₂ as cathode material and its electrochemical performance[J]. Int. J. Electrochem. Sci, 14, 8070-8079(2019).

[77] TONG H, DONG P Y, ZHANG J F. Cathode material LiNi_0.8Co_0.1Mn_0.1O₂/LaPO₄ with high electrochemical performance for lithium-ion batteries[J]. J. Alloys Compd, 764, 44-50(2018).

[78] LIU W M, HU G R, DU K. Surface coating of LiNi_0.8Co_0.15Al_0.05O₂ with LiCoO₂ by a molten salt method[J]. Surf. Coat. Tech, 216, 267-272(2013).

[79] LIU W M, HU G R, DU K. Synthesis and characterization of LiCoO₂-coated LiNi_0.8Co_0.15Al_0.05O₂ cathode materials[J]. Mater. Lett, 83, 11-13(2012).

[80] LIU W M, HU G R, DU K. Enhanced storage property of LiNi_0.8Co_0.15Al_0.05O₂ coated with LiCoO₂[J]. J. Power Sources, 230, 201-206(2013).

[81] YAN P F, ZHENG J M, GU M. Intragranular cracking as a critical barrier for high-voltage usage of layer-structured cathode for lithium-ion batteries[J]. Nat. Commun, 8, 14101(2017).

[82] HASHIGAMI S, KATO Y, YOSHIMI K. Influence of lithium silicate coating on retarding crack formation in LiNi_0.5Co_0.2Mn_0.3O₂ cathode particles[J]. Electrochim. Acta, 291, 304-310(2018).

[83] DU M L, YANG P, HE W X. Enhanced high-voltage cycling stability of Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂ cathode coated with Li₂O-2B₂O₃[J]. J. Alloys Compd, 805, 991-998(2019).

[84] HASHIGAMI S, YOSHIMI K, KATO Y. Improvement of cycleability and rate-capability of LiNi_0.5Co_0.2Mn_0.3O₂ cathode materials coated with lithium boron oxide by an antisolvent precipitation method[J]. ChemistrySelect, 4, 8676-8681(2019).

[85] ZHANG J Y, CAO Y, OU X. Constituting the NASICON type solid electrolyte coated material forming anti-high voltage system to enhance the high cut-off voltage performance of LiNi_0.6Co_0.2Mn_0.2O₂via charge attracts electrostatic assembly[J]. J. Power Sources, 436, 226722(2019).

[86] PARK K, PARK J H, HONG S G. Enhancement in the electrochemical performance of zirconium/phosphate bi-functional coatings on LiNi_0.8Co_0.15Mn_0.05O₂ by the removal of Li residuals[J]. Phys. Chem. Chem. Phys, 18, 29076-29085(2016).

[87] HE X S, XU X, WANG L G. Enhanced electrochemical performance of LiNi_0.8Co_0.15Al_0.05O₂ cathode material via Li₂TiO₃ nanoparticles coating[J]. J. Electrochem. Soc, 166, A143-A150(2019).

[88] YANG J, YU Z Y, YANG B. Electrochemical characterization of Cr₈O₂₁ modified LiNi_0.5Co_0.2Mn_0.3O₂ cathode material[J]. Electrochim. Acta, 266, 342-347(2018).

[89] GAO T P, WONG K W, FUNG K Y. A rational three-step calcination strategy for synthesizing high-quality LiNi_0.5Mn_0.3Co_0.2O₂ cathode materials: the key role of suppressing Li₂O formation[J]. Electrochim. Acta, 288, 153-164(2018).

[90] BHUVANESWARI D, BABU G, KALAISELVI N. Effect of surface modifiers in improving the electrochemical behavior of LiNi_0.4Mn_0.4Co_0.2O₂ cathode[J]. Electrochim. Acta, 109, 684-693(2013).

[91] WANG D, LI X H, WANG Z X. Role of zirconium dopant on the structure and high voltage electrochemical performances of LiNi_0.5Co_0.2Mn_0.3O₂ cathode materials for lithium ion batteries[J]. Electrochim. Acta, 188, 48-56(2016).

[92] POUILLERIE C, CROGUENNEC L, BIENSAN P. Synthesis and characterization of new LiNi₁-_yMg_yO₂ positive electrode materials for lithium-ion batteries[J]. J. Electrochem. Soc, 147, 2061-2069(2000).

[93] XIE Q, LI W D, MANTHIRAM A. A Mg-doped high-nickel layered oxide cathode enabling safer, high-energy-density Li-ion batteries[J]. Chem. Mater, 31, 938-946(2019).

[94] POUILLERIE C, CROGUENNEC L, DELMAS C. The Li_xNi_1-yMg_yO₂ (y=0.05, 0.10) system: structural modifications observed upon cycling[J]. Solid State Ionics, 132, 15-29(2000).

[95] HUANG B, LIN X H, WANG Z X. Synthesis of Mg-doped LiNi_0.8Co_0.15Al_0.05O₂ oxide and its electrochemical behavior in high-voltage lithium-ion batteries[J]. Ceram. Int, 40, 13223-13230(2014).

[96] BREUER O, CHAKRABORTY A, LIU J. Understanding the role of minor molybdenum doping in LiNi_0.5Co_0.2Mn_0.3O₂ electrodes: from structural and surface analyses and theoretical modeling to practical electrochemical cells[J]. ACS Appl. Mater. Interfaces, 10, 29608-29621(2018).

[97] WOO S U, PARK B C, YOON C S. Improvement of electrochemical performances of Li[Ni_0.8Co_0.1Mn_0.1]O₂ cathode materials by fluorine substitution[J]. J. Electrochem. Soc, 154, A649-A655(2007).

[98] LI C L, KAN W H, XIE H L. Inducing favorable cation antisite by doping halogen in Ni-rich layered cathode with ultrahigh stability[J]. Adv. Sci, 6, 1801406(2019).

[99] LI X, XIE Z W, LIU W J. Effects of fluorine doping on structure, surface chemistry, and electrochemical performance of LiNi_0.8Co_0.15Al_0.05O₂[J]. Electrochim. Acta, 174, 1122-1130(2015).

[100] LÜ C J, YANG J, PENG Y. 1D Nb-doped LiNi_1/3Co_1/3Mn_1/3O₂ nanostructures as excellent cathodes for Li-ion battery[J]. Electrochim. Acta, 297, 258-266(2019).

[101] YANG Z G, XIANG W, WU Z G. Effect of niobium doping on the structure and electrochemical performance of LiNi_0.5Co_0.2Mn_0.3O₂ cathode materials for lithium ion batteries[J]. Ceram. Int, 43, 3866-3872(2017).

[102] WU J F, LIU H G, YE X H. Effect of Nb doping on electrochemical properties of LiNi_1/3Co_1/3Mn_1/3O₂ at high cutoff voltage for lithium-ion battery[J]. J. Alloys Compd, 644, 223-227(2015).

[103] BREGER J, MENG Y S, HINUMA Y. Effect of high voltage on the structure and electrochemistry of LiNi_0.5Mn_0.5O₂: a joint experimental and theoretical study[J]. Chem. Mater, 18, 4768-4781(2006).

[104] SCHIPPER F, DIXIT M, KOVACHEVA D. Stabilizing nickel-rich layered cathode materials by a high-charge cation doping strategy: zirconium-doped LiNi_0.6Co_0.2Mn_0.2O₂[J]. J. Mater. Chem. A, 4, 16073-16084(2016).

[105] DONG S D, ZHOU Y, HAI C X. Ultrathin CeO₂ coating for improved cycling and rate performance of Ni-rich layered LiNi_0.7Co_0.2Mn_0.1O₂ cathode materials[J]. Ceram. Int, 45, 144-152(2019).

[106] CHEN Y X, LI Y J, LI W. High-voltage electrochemical performance of LiNi_0.5Co_0.2Mn_0.3O₂ cathode material via the synergetic modification of the Zr/Ti elements[J]. Electrochim. Acta, 281, 48-59(2018).

[107] DU R, BI Y, YANG W. Improved cyclic stability of LiNi_0.8Co_0.1Mn_0.1O₂via Ti substitution with a cut-off potential of 4.5 V[J]. Ceram. Int, 41, 7133-7139(2015).

[108] PARK S H, OH S W, SUN, Y K. Synthesis and structural characterization of layered Li[Ni_1/3+xCo_1/3Mn_1/3-2xMo_x]O₂ cathode materials by ultrasonic spray pyrolysis[J]. J. Power Sources, 146, 622-625(2005).

[109] YANG J, XIA Y Y. Suppressing the phase transition of the layered Ni-rich oxide cathode during high-voltage cycling by introducing low-content Li₂MnO₃[J]. ACS Appl. Mater. Interfaces, 8, 1297-1308(2016).

[110] BAK S M, NAM K W, CHANG W. Correlating structural changes and gas evolution during the thermal decomposition of charged Li_xNi_0.8Co_0.15Al_0.05O₂ cathode materials[J]. Chem. Mater, 25, 337-351(2013).

[111] MIN K, SEO S W, SONG Y Y. A first-principles study of the preventive effects of Al and Mg doping on the degradation in LiNi_0.8Co_0.1Mn_0.1O₂ cathode materials[J]. Phys. Chem. Chem. Phys, 19, 1762-1769(2017).

[112] DIXIT M, MARKOVSKY B, AURBACH D. Unraveling the effects of Al doping on the electrochemical properties of LiNi_0.5Co_0.2Mn_0.3O₂ using first principles[J]. J. Electrochem. Soc, 164, A6359-A6365(2017).

[113] XIAO P H, DENG Z Q, MANTHIRAM A. Calculations of oxygen stability in lithium-rich layered cathodes[J]. J. Phys. Chem. C, 116, 23201-23204(2012).

[114] AURBACH D, SRUR-LAVI O, GHANTY C. Studies of aluminum-doped LiNi_0.5Co_0.2Mn_0.3O₂: electrochemical behavior, aging, structural transformations, and thermal characteristics[J]. J. Electrochem. Soc, 162, A1014-A1027(2015).

[115] KIM U H, JUN D W, PARK K J. Pushing the limit of layered transition metal oxide cathodes for high-energy density rechargeable Li ion batteries[J]. Energy Environ. Sci, 11, 1271-1279(2018).

[116] KONISHI H, YOSHIKAWA M, HIRANO T. The effect of thermal stability for high-Ni-content layer-structured cathode materials, LiNi_0.8Mn_0.1-_xCo_0.1Mo_xO₂ (x=0, 0.02, 0.04)[J]. J. Power Sources, 244, 23-28(2013).

[117] LIU Q, ZHAO Z K, WU F. The effects of molybdenum doping on LiNi_0.6Co_0.2Mn_0.2O₂ cathode material[J]. Solid State Ionics, 337, 107-114(2019).

[118] WEIGEL T, SCHIPPER F, ERICKSON E M. Structural and electrochemical aspects of LiNi_0.8Co_0.1Mn_0.1O₂ cathode materials doped by various cations[J]. ACS Energy Lett, 4, 508-516(2019).

[119] XIANG W, ZHU C Q, ZHANG J. Synergistic coupling effect of sodium and fluorine co-substitution on enhancing rate capability and cycling performance of Ni-rich cathode for lithium ion battery[J]. J. Alloys Compd, 786, 56-64(2019).

[120] HU G, ZHANG M, LIANG L. Mg-Al-B co-substitution LiNi_0.5Co_0.2Mn_0.3O₂ cathode materials with improved cycling performance for lithium-ion battery under high cutoff voltage[J]. Electrochim. Acta, 190, 264-275(2016).

[121] CHANG S H, CHEN Y X, LI Y J. Improvement of the high-voltage electrochemical properties of Li[Ni_0.5Co_0.2Mn_0.3]O₂@ZrO₂ cathode materials with liquid phase modification[J]. J. Alloys Compd, 781, 496-503(2019).

[122] LI X, ZHANG K J, WANG M S. Dual functions of zirconium modification on improving the electrochemical performance of Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂[J]. Sustain. Energ. Fuels, 2, 413-421(2018).

[123] HE T, LU Y, SU Y F. Sufficient utilization of zirconium ions to improve the structure and surface properties of nickel-rich cathode materials for lithium-ion batteries[J]. ChemSusChem, 11, 1639-1648(2018).

[124] SUN Y K, KIM D H, YOON C S. A novel cathode material with a concentration-gradient for high-energy and safe lithium- ion batteries[J]. Adv. Funct. Mater, 20, 485-491(2010).

[125] XU X, JIAN J Y, XIANG L Z. Enhancing high-voltage performances of nickel-based cathode material via aluminum and progressive concentration gradient modification[J]. Electrochim. Acta, 317, 459-467(2019).

[126] SHI J L, QI R, ZHANG X D. High-thermal- and air-stability cathode material with concentration-gradient buffer for Li-ion batteries[J]. ACS Appl. Mater. Interfaces, 9, 42829-42835(2017).

[127] TANG M J, YANG J, CHEN N T. Overall structural modification of a layered Ni-rich cathode for enhanced cycling stability and rate capability at high voltage[J]. J. Mater. Chem. A, 7, 6080-6089(2019).

[128] RAN Q W, ZHAO H Y, WANG Q. Dual functions of gradient phosphate polyanion doping on improving the electrochemical performance of Ni-rich LiNi_0.6Co_0.2Mn_0.2O₂ cathode at high cut-off voltage and high temperature[J]. Electrochim. Acta, 299, 971-978(2019).

[129] ZHANG M L, ZHAO H Y, TAN M. Yttrium modified Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂ with enhanced electrochemical performance as high energy density cathode material at 4.5 V high voltage[J]. J. Alloys Compd, 774, 82-92(2019).

[130] TANG W J, CHEN Z X, XIONG F. An effective etching- induced coating strategy to shield LiNi_0.8Co_0.1Mn_0.1O₂ electrode materials by LiAlO₂[J]. J. Power Sources, 412, 246-254(2019).

[131] YU H F, LI Y G, HU Y J. 110th anniversary: concurrently coating and doping high-valence vanadium in nickel-rich lithiated oxides for high-rate and stable lithium-ion batteries[J]. Ind. Eng. Chem. Res, 58, 4108-4115(2019).

[132] CHEN Y X, LI Y J, TANG S Y. Enhanced electrochemical properties of the Cd-modified LiNi_0.6Co_0.2Mn_0.2O₂ cathode materials at high cut-off voltage[J]. J. Power Sources, 395, 403-413(2018).

[133] KONG D F, HU J T, CHEN Z F. Ti-gradient doping to stabilize layered surface structure for high performance high-Ni oxide cathode of Li-ion battery[J]. Adv. Energy Mater, 9, 1901756(2019).

[134] HAN B, XU S, ZHAO S. Enhancing the structural stability of Ni-rich layered oxide cathodes with a preformed Zr-concentrated defective nanolayer[J]. ACS Appl. Mater. Interfaces, 10, 39599-39607(2018).

[135] SCHIPPER F, BOUZAGLO H, DIXIT M. From surface ZrO₂ coating to bulk Zr doping by high temperature annealing of nickel-rich lithiated oxides and their enhanced electrochemical performance in lithium ion batteries[J]. Adv. Energy Mater, 8, 1701682(2018).

[136] MENG K, WANG Z X, GUO H J. Improving the cycling performance of LiNi_0.8Co_0.1Mn_0.1O₂ by surface coating with Li₂TiO₃[J]. Electrochim. Acta, 211, 822-831(2016).

[137] WU F, LI Q, CHEN L. Use of Ce to reinforce the interface of Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂ cathode materials for lithium-ion batteries under high operating voltage[J]. ChemSusChem, 12, 935-943(2019).

[138] ZHAN X W, GAO S, CHENG Y T. Influence of annealing atmosphere on Li₂ZrO₃-coated LiNi_0.6Co_0.2Mn_0.2O₂ and its high-voltage cycling performance[J]. Electrochim. Acta, 300, 36-44(2019).

[140] WANG D, LI X H, WANG Z X. Co-modification of LiNi_0.5Co_0.2Mn_0.3O₂ cathode materials with zirconium substitution and surface polypyrrole coating: towards superior high voltage electrochemical performances for lithium ion batteries[J]. Electrochim. Acta, 196, 101-109(2016).

[141] YANG H P, WU H H, GE M Y. Simultaneously dual modification of Ni-rich layered oxide cathode for high-energy lithium- ion batteries[J]. Adv. Funct. Mater, 29, 1808825(2019).

[142] RAN Q W, ZHAO H Y, SHU X H. Enhancing the electrochemical performance of Ni-rich layered oxide cathodes by combination of the gradient doping and dual-conductive layers coating[J]. ACS Appl. Energy Mater, 2, 3120-3130(2019).

[143] SUN S M, LIU T, NIU Q H. Improvement of superior cycle performance of LiNi_0.8Co_0.15Al_0.05O₂ cathode for lithium-ion batteries by multiple compound modifications[J]. J. Electroanal. Chem, 838, 178-185(2019).

[145] XU G L, LIU Q, LAU K K S et al. Building ultraconformal protective layers on both secondary and primary particles of layered lithium transition metal oxide cathodes[J]. Nat. Energy, 4, 484-494(2019).